Are you referring to Larry Prescott's paper masks? He
make collage cut paper and colored pencil symmetrical
masks. You will find his lesson plan on IAD (easy to
find) and you will find his site link on my site (easy
to find). Larry's site comes up in Google search
too....ah...now I am curious.....
YES - the plan comes in Google as well:
http://www.princetonol.com/groups/iad/lessons/elem/papermask.htm